Any website that acts like a "shop" will be e-business. Even if you just open a blogspot & post some photos with prices, it will be e-business.

What is not e-business then?
1) If you are not selling anything through your site.
2) Main purpose is blogging, crapping etc, but sometimes got sell your personal stuff e.g. I want to sell my 2 years old car & decide to post it in my blog to get some response.

That's all I understand.

If like LYN, where they have advertisements worth more than RM1k (I guess), is that compulsory to register in SSM?